Valve mechanism.



Y Patentd May I, |900. G. AIMUNT, VALVE MEGHANISM.`

(Application ileld Dec. 30, 1897.) [No Model.) 4 Sheets-Sheet l.

mi Nonms rcrsns ca.. Pumouhlm wnsumn No. 648,370. Patented May l, 1900.

G. AIMONT.

vALvE MECHANISM.

(Application led Dec. 30, 1887.) (No Model.) 4 Sheets-Sheet 2.

No. 648,370. Patented May l, |900.

G. AlMuNVT. VALVE ,MECHANISM (Application med Dec. so, 1897.; (No Mode.) 4 Sheets-Sheet 3.

Patented May I, |900.

Il u IIN G AI M 0 N T VALVE M ECHANIKSM.

(pphcatxon ixled Dec 30 189' y THE MORRIS PETERS 60., PNOTQLWHO.. WASHINGTON. D,

A No. 648,370.

(Nu Model.)

. UNITEDV STATES PATENT OFFICE.

GUSTAVE AIMONT, OF TIRLEMONT, BELGIUM.

VALVE MEoHANlsM.

i SPECIFICATION forming part of Letters Patent No. 648,370,dated May 1, 1900. Application filed December 30, 1897- Serial No. 664,658. (No model.)

To aZZ whom, it may concern:

Be it known that I, GUsTAvE AIMONT, a citizen of the Kingdom of Belgium, residing at Tirlemont, Belgium, have invented certain new and useful Improvements in Valve Mechanism, of which -the'following is a specification.

The present invention relates to an improved Valve mechanism for steam or explosion engines or motors,one object being toA provide a device of this kind in which an adjustable cam produces the closing of the admission by the quick return movement of the admission parts.

A further object of the invention is to provide mechanism which is readily applicable to any kind of admissions, substantial in construction, and very effective in operation.

The improvements consist in the construction, novel combination, and arrangement of parts fully described hereinafterand specifically pointed out in the appended claims.

In the drawings forming a part of this speciication, Figure l is a longitudinal section of the valve mechanism. Fig. 2 is a transverse section on line 1 2 of Fig. l, partly broken away. Fig. 3 is a transverse section on line 5 6 of Fig. l. Fig. 4c is a transverse section taken on a plane between the two above` named sections and passing through the parts marked Z. Figs. 5 and 6 are transverse sections on different parallel planes of the box u and valve y, Fig. 5 being a section on line 3 fi of Fig. l, and Fig. 6 asection on line 7 8 of the same gure. partly in elevation and partly in section, of the ungearer and proximate parts.' Fig. 8 represents a side elevation of the ungearing mechanism, with the mechanism and` casing at the right end partly in section. Fig. 9 represents a horizontallongitudinal section of the same, and Fig. l0` is a detail view of `the transmission parts ofthe regulator.

Like letters refer toA like parts throughout all the figures.

The improved valve mechanism comprises a cam, the upperor free part of which is con nected with the admission member (valve or slide-valve) either directly or by means of suitable intermediates, the lower part of said cam being connected with an operating part of the motor to obtain the reciprocating movement and with an operating and regulating part'by means of intermediate mechanism to.

Fig.` 7 is a detail View,-

obtain the cam motion produced by the closing of the admission by the quick return movement of the admission part. This quick return movement may be insured in dilerent ways and automatically by means of balanceweights, springs, atmospheric pressure, dmc.

In the apparatus hereinafter described l'. make use of the latter means, though other means, such as indicated, might be used for the same purpose. Such means being well known do not constitute a feature of my invention.

The invention further comprises a strokedeadening device or liquid-brake, a special construction of which is shown in the accompanying drawings, and which is directly connected with the parts of the cam. However, said special construction may be connected with said cani parts by means of intermediates, so that the latter are not under the direct action of said brake device or other wellknown liquid-brake `devices may be substituted for the specialconstruction, said brake devices being in direct or indirect connection with the cam parts.

The cam mechanism is composed of a piston 7s, provided with, preferably, two lugs or projections Z and movably arranged in a cylinder d. Said piston is actuated by means of a rod r, pivotally connected with a fork i, which in turn is connected with an operating part of the motor, (eccentric-rod or any other suitable part.) Above said piston lo is a stationary piston e, secured in place by means of longitudinal keys n.2 and adapted to be adjusted by means of a screw o2, having a shoulder 192 engaging a suitable recess provided in piston b, secured to cylinder OZ. The'stationary portion e is provided with lugs f, corresponding to the lugs Z of the pist-on Zt and forming with the latter a circular or nearly-circular periphery to leave a certain play for the lugs f at the moment of ungearing. The shank t of said screw o2 passes through the body of the piston b and is heldin the latter by IOC with a pivot-pin b2, serving to connect the A cam mechanism to the valve-stem or the slide-valve rod,&c. The pistonbis arranged the-bottom 'of cylinder c.

limiting the stroke of the piston b and guiding the cylinder d and the liquid-reservoirh with cylinder c. The latter is closedA at'its lower end by means of a plate q, on whichV rests the wall s. An opening provided dat the lower part of cylinder c and normally closed by means of a screw-plug o serves-fon` Vthe outlet of liquid. The above-'named liq d. through passages o'and o3 in the wall s andl .throughpassagep in cylinder (Z. Thepiston lkis furthermore provided with passagesm,

connecting the two facesthereof, and with a passage s'passing through the rod'ztocommunicate theupperface of the piston 7c with ,Y *During the up movement of the piston lo theliquid iioWs under said. piston through ,thepassages m to enter the reservoir h and through the passages s' to lill the bottom Aof the cylinder c during the up movement of .-thecylinderd. When the` lower rim of said V,cylinder d has reached the openings-03, the

liquid iiows directly from the' reservoir hfinto thelower part of the cylinder. c. Y Atthe monient. of ungearing thel quick` down movevment of cylinder d forcesl the liquid-out from thelower part of said cylinder c upon l the upper face lof pistonl through the passage Vs'whence said liquid liows throughthe passages mp 0 into the reservoir-h. The liquid carried-away by thev cylinder d into the vupper part of the cylinder cy is .forced into reservoir h by means of the automaticfcocku.

Said cock isprovided with a passage g', con-'- nected: to the yupper part-of the cylinder c,

andwithfa passage ff, connected to the resf' ervoir h. Between'saidpassages gvand-fis arranged a valve o, `secured vto .the bottom of cock u by means of a nutw and-tightened at itsupper part by means of a nutfc. The

valve-body vis provided with a chamber and .vertical bore,in vwhich the Aguide-piston 7c.' ..carryin g .the valvea', may-be moved, Vsaid valve a serving to communicate the. said chamberwith a :transverse passage e', Acon'-- nectedto conduit Yg' bymeans ofthe annu-v 1ar-spacej .The said chamber is connected to the lconduit fthrough two verti'cal'pas` sagesz".

tliepiston Zcrand the tension of whichmay 1 be-adjustedbymeans of the screwcZf, through forced by .the vpiston b` intothe passage QQ-the" annular space j andthe transversepassagc ,fi raises .thevalve c and enterstheabovenamed chamber, whence it i'ows through the .moves the rod-z', plate q of the cylinder c and carries a plate 00, provided with a coiled spring o', housed nwithin a box u', securedto the cover-plate q. I The 'cylinder d is provided with an annu- ;larshoulder/r, against which bears .the pis- `ton k when it reaches vthe lower end of its uid-reservoir his connected to vthe :cylinder -The' valve c is held on its seating by. the action of aspring Z bearing against vertical conduits i. into the Ypassage f'andthe vrseryoiri.'f'y .A

-v --Y-'lhe rod z-of' the piston k is provided with apkey fn, adaptedl to slide in a longitudinal 'Vgrocveorway g in a sleeve r, receiving at its lower end a packing-box q', through `which Saidslceve r is held by the stroke, said shoulder-servingto -bring the admission-valve or slide-valve backwhen the same does not come back automatically by any accidentalcause.I y t f Y Thev plate a: is provided with 'a button-n', engaging a slot-likecasing p',"connected-with a rod y, operated bv the vregulating mechanism. (SeexFigs. 4,^7,8, 9, andlOs)v VThe casingp is composed'of a frame in which is movably arranged-a boxe', resting `onja. spring at?, and against which. bears said buttonfn. The-rod y is secured-with its free end Vin an .cyeZ2 onthe-nut 112,. mounted-on the'screw o2 andv moving with the latter'in theguid'e j?. The screw 02 is provided-with a-.rod f2, termimating-'in a-shaftbz; connected by means of aball-and-socket joint g2 nwith an` eccentricbelt: a3, `mounted on the shaita,2 of the motor. .The shaft b2 is providedwithpa longitudinal groove n2, in-Whiehsslides thekey m? of the gear-wheel k2, meshingwith the toothed sector c?, mounted Ona shaft d2, actuated by the crank-arm c2.- vThe latter maybe'actuated y .by' hand or connected with thel regulator vthrough the` agency'of the rod h2. The eccentric a3 moves the screw o2, and therefore "the, slot-like casing 10.', to constant distances,

(indicated'by thefreference-letters BC in Fig. 4 of the accompanying drawings. When the -crank-arm2 is ac tuatedby the regulator or by hand-, the. shaftb? will -be rotated, andsaid shaft.l moves-the nuts-t2 along the screwb?, the

slot-like casing p'being moved to 'a-supplemental distance, the maximum of which is in- 4dic'ated-by-BA'in Fig.' 4i TheminimumdisplacementBxC of ,said casing p corresponds "to that position fof the piston-lugs Z, Fig. 1, in which they are inserted between the flugs fofpiston c, the latter being.' stationary and the-,admission thereforezm'l.- The minimum displacement A Cv of thefsl'ot-like casingp' corresponds to that position ofvthe .lugs Z in vwhich they Vare-inffront/ot' the lugs f,so that 'the saidllugs are-arranged the one above theothervdlur'n g the whole stroke, the admission therefore taking-place during theY entire c stroke of the .motor-piston.. Between these two extreme points I may obtainlall intermediate admission degrees-byadjusting the nuts 2,- andf vlherforf'athe lugs Z, automatically by meansot 'the regulator or by-hand. The lugs Zf'being in relative positions', such as -indicated in-,F-ig. 4, at the beginningof the-up- Vstroke of piston 7a,y they will be moved away IOO IIO

from each other at a given moment to produce the ungearing and the quick closing of the admission by the down movement of the piston e.

The minimum displacement B C of the casing p' corresponds (theoretically) to the upper position of the regulator. j The maximum displacement corresponds to the lower position of the regulator.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. The improved valve mechanism comprising a lower piston provided with lugs and properly guided, an upper piston also provided with lugs and adj ustably arranged above said lower piston and connected with the admission-valve, means for moving and,

rotating said lower piston, means for regulating the rotation of the lower piston, means for insuring the quick return movement of the upper piston and the admission-valve, and means for deadening the stroke of said upper piston, substantially as set forth.

2. The improved valve mechanism comprising a lower piston and an upper piston, both provided with lugs, a cylinder in which moves the lower piston and in which the upper piston may be adjusted, an air-piston secured on said cylinder and connected with the upper piston and the admission-valve, an aircylinder, in which moves said air-piston serving to move the upper piston and the admission-valve quickly back when` the lower and upper pistons are disengaged, means for moving and rotating said lower piston, means for regulating the rotation of the lower piston,

and means for deadening the stroke produced i by the quick return movement of said lower piston, substantially as set forth.

3. The'improved valve mechanism comprising a lower piston and an vupper piston both provided with lugs, a cylinder in which moves said lower piston and in which the upper piston may be adj usted,aliquid-reservoir around said cylinder, passages communicating said reservoir with the interior of said cylinder,

passages extending through said lower piston,

a passage between the lower part of the cylinder and the upper part of the reservoir, means for moving and rotating said lower piston, means for regulating the rotation of the lower piston, and means for insuring the quick return movement of the upper piston and the admission-valve, substantially as set forth.

4. The improved valve mechanism comprising a lower piston and an upper piston, both provided with lugs, a cylinder in which moves the lower piston and in which the upper piston may be adj usted,a liquid-reservoir around said cylinder, passages between the reservoir and the cylinder, an air-piston connected with said cylinder and the upper piston, an aircylinder in which moves the said air-piston, a cock or equivalent for leading the liquid carried away by said air-cylinder back into the reservoir, a passage between said cock and the air-cylinder, a passage between the cock and the reservoir, a valve-body within said cock, a transverse passage in said valvebody and connected to the passage in the aircylinder, a valve proper in said valve-body and above said cross-passage and serving to connect the latter to a chamber, vertical passages in said valve-body connecting said chamber to the passage of the reservoir, means for moving and rotating the lower piston, and means for regulating the rotation of said lower piston, substantially as set forth.

5. The improved valve mechanism comprising a lower piston and an upper piston both provided with lugs, a piston-rod on said lower piston, a sleeve keyed on said piston-rod, a plate having a button and arranged on said sleeve, a spring on said plate, a slot-like casing engaging said button, a rod connecting said casing with an operating part of the motor for rotating the lower piston, suitable mechanism for regulating the rotation of said piston, means for moving the lower piston, means for insuring the quick return movement of the upper piston and means for deadening the quick return stroke of said upper piston, substantially as set forth.-

6. Theimproved valve mechanism comprising a lower piston and an upper piston both provided with lugs, suitable mechanism for rotating the lower piston, a screw adapted to rotate in a nut, connected with the said mechanism, a shaft in line with said screw and in-l tegral therewith, a ball-and-socket joint between said shaft and the operating part of the motor, a gear-wheel keyed longitudinally on said shaft, a toothed sector meshing with said gear-wheel, a crank-arm for actuating said sector, means for insuring the quick return movement of the upper piston and the admission-valve, and means for deadening the stroke of the return movement of said upper piston, substantially as set forth.

7. The improved valve mechanism comprising a lower piston and an upper piston both provided with lugs, suitable mechanism for rotating the lower piston, a screw adapted to rotate in a nut connected with said mechanism, a shaft in line with said screw and integral therewith, a ball-and-socket joint between said shaft and Vthe operating part of the motor, a gear-wheel keyed longitudinally on -said shaft, a toothed sector meshing with saidgear-wheel, a crank-arm for actuating said sector, a rod connecting said crank-arm with the regulator,means for moving the lower GUSTAVE AIMONT.

Witnesses CAMILLE ROLLAND, AD STURM.

IIO 

